Question about 2004 Yamaha Road Star Silverado
I have a 2004 Yamaha road star Silverado 1700. Yesterday while riding, I made a short stop and the bike was off for about 20 minutes. When I went to restart it, fuel was flowing out of the breather ( maybe 1/4 cup or so) when I turned the key on. I let it sit for a minute with the key still on and after the fuel evaporated, it started but flooded in the beginning. I have been unable to make it do it again. what would be the issue here?
Hi, T_aaron and the usual suspects are:
1. Damaged or restricted fuel tank venting system.
2. Loose float bowl screws.
3. Damaged float bowl o-ring.
4. improper fuel level in the float bowl.
5. Worn or dirty inlet valve or seat.
6. Damaged or leaking float assembly.
7. Particle contamination in inlet fitting cavity.
8. Damaged petcock diaphragm allowing fuel to flow through the vacuum line into the combustion chamber.
9. Contaminated fuel tank.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Re Fuel leaking out of air filter Road Star Forum Yamaha Road Star
Fuel pouring out of breather
Yamaha XV17ATMV Road Star Owner Manual
Yamaha XV1700P Service Manual
Posted on Jul 03, 2017
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Posted on Jan 02, 2017
Sounds like it may be over jetted, and running alittle rich. Can you see black smoke if you rev it up? Could be misadjusted floats after the kit was installed.
Posted on Mar 07, 2009
Remove the water trap bowl at the bottom of the petcock, (gas valve). Any water or trash in the bowl? Drain a cup of gas from the tank. Any water or trash in the cup? Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ).
Drain the carburetor. There should be a screw on the lower side of the carb float bowl. Remove the screw then replace it after the fuel drains. Turn the gas back on and wait a minute for the carb to fill with gas. Install a new stock NGK spark plug and try to start the engine. If the bike doesn't start and run properly then shut off the gas and remove the carburetor from the engine.
Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the two screws on the outside throat of the carb and spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two screws down. Only screw these in until they LIGHTLY seat. Now turn each screw one and one half turns outward. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. Set the idle speed with the idle screw. This process should get you back on the road.
Since you mentioned uneven idle revs, be sure the carb and manifold are on tight and also tighten the cylinder and head. Air leaks can screw up the idle.
Please rate this solution. Thanks speedfreak41
Posted on Apr 04, 2009
Sounds to me like it could be a few things... pretty interesting that it runs and shuts down...sits for a little while then fires back up. Could be something as simple as a bad ground.. maybe it needs cleaned.. if the ground is making very little contact.. the bike would run bad, and because its direct current it has to flow. The metal in the motor frame etc will hold so much DC current.. but *** soon as it load up the bike would stop sparking. Let it sit for a while, DC trickles into the battery through the slight contact, bike fires back up. OR could be bad venting of your fuel tank, or a partial clog at the pet ****.. the first is pretty easy to check, open your fuel cap and start the bike..if it does the same thing then its not a vent problem. One thing that does happen on the Radian, is the reserve fuel screen inside the tank comes loose, and then everything inside the that has built up over the years either partially clogs the pet ****, or the hose, or both. Take the tank off, pull the pet **** off..if it still has two intact tubes with good screens..you probably don't have any junk in your line..but I would pull the line off and blow through it any way... it could be some type of blockage, when the bike sets the fuel seep through, but when it runs it eventually creates a vaccuum that stops the fuel flow. Those are my two first thoughts... good luck!!
Posted on Jun 07, 2009
The dealer is not interested.
The bike is set up very lean to meet emissions standards. Any of them will benefit from larger jets. It's probably running too lean.
Posted on Jun 16, 2009
HT coil, 99% certain, the one that's on the end of the plug lead. electrical stuff, particularly HT coils break down when warm. if it was a CDI unit it would likely go pop and that's the end of it. you can get the coil tested, or get a second hand cheap one or borrow one to see if that's it. I used to test them by putting them on a radiator to get really hot, faulty ones would give up real quick then.j
Posted on Aug 09, 2009
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